Device for converting motion



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E. GATLIN. DEVICE FOR GONVERTING MOTION. Y

No. 292,47L Patented Jan. 29, 1884.

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` l E. GATLIN. y DEVICE FOR' G ONVERTING lszrofJf-IQNI No.. 292,471. Patented Ja11f2'9, 1884. f

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DEVICE FOR CONVERTING MOTION.

' tpncrrrcnrioiv farming part of Letters Patent No. 292,471, dated January 29,1884.

v Application filed November 19, 1883. v('No model.)

.To @ZZ whom it may concern:

Beit known that I, ELI CATLIN, a citizen of the United States, residing at Post Oak, in the county of Jack and Stateof Texas, have invented a' new and useful Device for Con# verting Motion, of which the followingis a speciiication, reference being had to the accompanying drawings.

This invention relates to devices for converting the reciprocating motion of the piston-rod in steam-engines into a rotary motion, and for operating the valve-gear; and it has for its object to produce mechanism which shall be simple, easily a-pplied, and by which unnecessary expenditure of power shall be avoided, as will be hereinafter fully described, and particularly pointed out in the'claims.

In the drawings hereto annexed, Figure l is a perspective view of my invention as applied to a steani-engine.

Fig. 2 isa plan view of the same.v

Fig. 3 is a longitudinal vertical sectional view. Fig. 4 is a vertical transverse the outer sides of `the pinions F F2, are ratch` et-wheels G G, that engage pawls or dogs H H2, pivoted to the sides of 4the pinions F F2,

and having springs I, which b ear against the teeth of the said ratchet-wheels, thus holding the pawls in engagement therewith.

J designates the piston-rod, 'which is pro-n vided at its Outer end with a frame, K, the upper and lower sides of .which are composed of rack-bars L L, engaging the pinions F and F, respectively. It will be seen that when the pistou-rod moves in an outward direction it serves to revolve the pinion F, which ,through its adjacent ratchet-wheel, serves to transmit a rotary motion tothe main shaft upon which it is mounted, while the pinion FZ revolves without influencing the shaft. Vhen the piston-rod moves inward, the operation is reversed, and motion is transmitted to the main shaft through the pinion F2 and its adjacent 55 oted to the said rod l? are two pairs of levers, 65

R R2 and S S2. The levers R andS have slots s, working upon pins p upon the lower framebeam, N, and the levers R2 and Sl are -provided with slots if', working on pins t'upon the upper frame-beam, O. provided with a laterally-projecting pin, T,

adapted to strike and operate the lever R2.

The, lever S2 is operated by the inner end of the frame K, and the upper side of the said frame is provided with a pair of pivoted 75 latches, U U, facing in opposite directions, and held in a raised position by means of springs V V, so as to operate the levers R and S when the'frame K reciprocates. `A

The operation of this invention will be read- So ily understood from the foregoing description, taken in connection with the drawings hereto annexed. The lower end of the hand-lever Q is connected pivotally with the valve-stem W of theoengine. yVhen the piston-rod recipro- 8 5 `cates,it conveys,tl1rougl1 the mechanism herein described,a rotary motion to the main shaft. W'hen the piston-rod, with the frame K, moves in an outward direction, and has nearly conipleted its stroke, the pin T of frameKwill 9o strike the lower end of the lever RZ, thus start- 1 ing the rod l? and partly reversing the valve.

The motion, however, will vbe too quick and sudden to completely reverse the valve, and

the reversion of the position of the latter will 95 be completed by the action ofone of the springlatches Uagainstl the lever R, under whiche the said latch has slipped on the outward stroke of the piston-rod. Vhen Lthe pistonrod completes its inward stroke,the operation roo is repeated, with the exception that the levers Sand SZ are operated or acted against. for the purpose of reversing the valve.

This invention is simple, and may be ap- The said uprights are also 6o The frame K is 7o plied Without much expense to steam-engines of ordinary construction. It eeonomizes steam by the avoidance of dead-centers, rendering` the action of the piston-rod direct at all points. The valve-gear also is simple and efficient.

I claim as my invention and vdesire to secure by Letters Patent of the United Statesl. The combination, with the piston of an engine and mechanism for converting its reciprocating motion into rotary, of a lever, Q, connected pivot-ally with the valve-stein, a slide-rod, l", attached to said lever, and a series of levers pivoted to the slide-rod and adapted to operate the valve-gear, substantially as set forth.

2. 'The combination ofthe piston-rod having the toothed frame K, the main shaft, the pinions mounted loosely upon the latter, the rateh ELI CATL'IN.

\Vitnesses:

Crus. H. W'Iriiix l. A. CATLIN. 

